Keithley 2001 Operator's Manual page 96

Front Panel Operation
The front panel TRIG key is active when
EXTERNAL, GPIB, or TRIGLINK is se-
lected.
To select manual triggering (TRIG key) from the SELECT
ARM SOURCE menu, place the cursor on MANUAL and
press ENTER. The instrument returns to the SETUP arm
layer menu.
GPIB: With this selection, bus triggers control the arm
source. Operation passes immediately into the scan layer
when a bus trigger (GET or *TRG) is received by the Model
2001. See Section 4 for detailed information on bus triggers.
Front panel TRIG key (see MANUAL) is
active with bus triggering selected. Press-
ing the TRIG key passes operation into the
scan layer.
To select bus triggering from the SELECT ARM SOURCE
menu, place the cursor on GPIB and press ENTER. The
display returns to the SETUP arm layer menu.
TRIGLINK: With this selection, the arm source is
controlled by the Trigger Link of the Model 2001. Trigger
Link is an enhanced trigger system that uses up to six lines
to direct trigger pulses to and from other instruments.
Operation passes into the scan layer when the Model 2001
receives a trigger over the Trigger Link. See
for details on using the Trigger Link.
Front panel TRIG key (see MANUAL) is
active with the Trigger Link selected.
Pressing the TRIG key passes operation
into the scan layer.
To select the Trigger Link from the SELECT ARM
SOURCE menu, place the cursor on TRIGLINK and press
ENTER. The following menu is displayed:
SELECT INPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the presently selected
input line.
3-64
NOTE
NOTE
paragraph 3.7.7
NOTE
To select a trigger input line for the Model 2001, place the
cursor on the desired line number and press ENTER. The
following message is displayed:
SELECT OUTPUT LINE
#1 #2 #3 #4 #5 #6
The position of the cursor indicates the presently selected
output line.
To select a trigger output line for the Model 2001, place the
cursor on a different line number and press ENTER. The
instrument returns to the SELECT ARM SOURCE menu.
Note that you cannot use the same trigger line for both input
and output.
HOLD: When HOLD is selected, the arm source is
suppressed. As a result, operation does not pass into the scan
layer until HOLD is cancelled by selecting one of the other
arm source selections. Select HOLD from the SELECT
ARM SOURCE menu by placing the cursor on HOLD and
pressing ENTER. The instrument returns to the SETUP arm
layer menu.
COUNT
This menu item defines the number of times operation
returns to the arm layer. With the SETUP arm layer menu
displayed, select this menu item by placing the cursor on
COUNT and pressing ENTER. The following menu is
displayed:
ARM COUNT
INFINITE ENTER-ARM-COUNT
INFINITE: Use this selection to continuously return
operation to the arm layer. Select continuous arming from
the ARM COUNT menu by placing the cursor on INFINITE
and pressing ENTER. The display returns to the SETUP arm
layer menu.
ENTER-ARM-COUNT: With this selection, the user
determines the number of times operation returns to the arm
layer. You can program the Model 2001 to arm up to 99999
times. Perform the following steps to enter the arm count:
1. With the ARM COUNT menu displayed, place the cur-
sor on ENTER-ARM-COUNT and press ENTER. A
message indicating the present arm count is displayed:
ARM COUNT = 00001
The above arm count indicates that the instrument will
arm one time.
2001-900-01 Rev. K/ August 2010